Said bonds shall be sold to the highest and best bidder therefor at a public sale after advertisement by the district at least once a week for two consecutive weeks in the official journal of the district and in a newspaper of general circulation or a financial journal published in New Orleans, New York City or Chicago, with the first publications to be made at least fifteen days prior to the date fixed for the reception of bids, reserving to the district the right to reject any and all bids and to readvertise for bids. If, after the advertisement as hereinabove provided, no bids are received, or if such bids as are received are considered in the discretion of the district to be unsatisfactory and are therefore rejected, then the district may sell such bonds by private sale but no private sale shall be made at a price less than the highest bid which may have been received. Notwithstanding the aforesaid provisions with respect to public sale said bonds may be sold to the federal government or any agency thereof through negotiated or private sale. The board of commissioners may in any resolution authorizing the issuance of such bonds enter into such covenants with the future holder or holders of the bonds as to the management and operation of facilities, the lease or rental thereof, the imposition and collection of fees and charges for services and facilities furnished by the district, the disposition of such fees and revenues, the issuance of future bonds and the creation of future liens and encumbrances against such facilities and the revenues therefrom, the carrying of insurance on the facilities, the keeping of books and records, and other pertinent matters, as may be deemed proper by the board of commissioners to assure the marketability of the bonds, provided such covenants are not inconsistent with the provisions of this section. Any holder of the bonds or of any of the coupons thereto attached may by appropriate legal action compel performance of all duties required of the board of commissioners and officials of the district by this section. If any bond issued hereunder is permitted to go into default as to principal or interest, any court of competent jurisdiction may pursuant to the application of the holder of the bond, appoint a receiver for the facilities of the district, which receiver shall be under the duty of operating the facilities and collecting and distributing the revenues thereof pledged to the payment of the bonds, pursuant to the provisions and requirements of this section and the resolution authorizing the bonds. No proceedings in respect to the issuance of any such bonds shall be necessary except such as are contemplated by this paragraph. For a period of thirty days from the date of publication of the resolution authorizing the issuance of bonds hereunder, any person in interest shall have the right to contest the legality of the resolution, the legality of the bond issue and the security therefor, for any cause, and the validity of all other provisions and proceedings in connection with the authorization and issuance of the bonds, after which time no one shall have any cause or right of action to contest the legality of said resolution or of the bonds authorized thereby or of any proceedings taken in connection therewith for any cause whatever. If no suit, action or proceeding is begun contesting the validity of the bond issue within the thirty days herein prescribed, the authority to issue the bonds and to provide for the payment thereof, the legality thereof and of all of the provisions of the resolution and other proceedings authorizing the issuance of the bonds shall be conclusively presumed, and no court shall have authority to inquire into such matters. Such bonds shall have all the qualities of negotiable instruments under the law merchant and the Negotiable Instruments Law of the State of Louisiana and the bonds and the income therefrom shall be exempt from taxation by the State of Louisiana and by any parish, municipality or political subdivision of the state.
La. R.S. § 33:4573